ADJUSTABLE FEATURES
SX TRANSISTOR CONTROLS
Page 32
July 2001
Range
100% to 0% of battery volts
Set
51 to 170
Resolution
0.78% per set unit
Example:
Setting of 0 = no speed limit
Setting of 170 = maximum speed
reduction
Setting of 149 =100%-((149-51) - (creep val/8)) x 0.78
FUNCTION 13
PERCENT CHARGE SWITCH PLUG TO
REGEN
( Push 13 )
This function adjusts the percentage of battery volts at
which the control switches from regenerative to plug
braking on overspeed.
A setting of less than 100 will result in the control going into
plug braking during an overspeed condition. A setting of
greater than 100 will result in the control going into
regenerative braking during an overspeed condition. The
default setting of 100 will always result in regenerative
braking during overspeed.
FUNCTION 14
INTERNAL RESISTANCE
COMPENSATION
( Push 14 )
This function is used when the Battery Discharge Indicator
is present. Adjustment of this function will improve the
accuracy of the BDI. In order to determine this setting, the
voltage drop of the battery under load must first be
calculated by the following method:
1. Record open circuit voltage (Vo) by measuring the
voltage at the control positive and negative power
terminals.
2. Load the traction motor to 100 amps in 1A and record the
voltage (V
L
) at the control positive and negative power
terminals.
3. Calculate voltage drop (V
Drop
) as follows:
V
Drop
= V
O
- V
L
4. Use the table below to determine the appropriate setting
using the calculated V
Drop
as a reference.
INTERNAL RESISTANCE COMPENSATION
TABLE
Setting V
Drop
Setting
V
Drop
2 11.44
17 1.34
3 7.60
18 1.27
4 5.72
19 1.20
5 4.57
20 1.14
6 3.81
21 1.09
7 3.27
22 1.04
8 2.86
23 0.99
9 2.54
24 0.95
10 2.28
25 0.91
11 2.08
26 0.88
12 1.90
27 0.85
13 1.76
28 0.82
14 1.63
29 0.79
15 1.52
30 0.76
16 1.43
31 0.74
FUNCTION 15
BATTERY VOLTS
(Push
l5)
In order for the battery discharge indication feature of this
control to operate properly, this function must be set to a
value between 70 and 80.
FUNCTION 16
BATTERY VOLTAGE TRIP POINT FOR
MOTOR CURRENT REDUCTION
( Push CONT1)
This function adjusts the battery voltage trip level at which
the armature current begins to decrease to prevent the
battery voltage from dipping even lower.
Range
Setting
0 to 255
Calculation
(Setting/5.29) + 36V = trip volts
Example
Setting of 105=(105/5.29)+36= 55.8 volts
FUNCTION 17
CARD TYPE SELECTION
( Push CONT 2 )
This function allows for the selection of the card type for
this vehicle’s application. This function should always be
set to 117 for this control.
FUNCTION 18
LINE CONTACTOR DROP OUT TIME
DELAY
( Push CONT 3 )
This function allows for the adjustment of the time
allowable for the control to be idle before the line contactor
opens.
Range
0 to 25.5 seconds
Setting
0 to 255
Resolution
0.1 seconds per set unit
Example:
Setting of 255 = 25.5 seconds
The following functions have function numbers larger than the
numbers on the Handset keyboard. To access these functions,
push the CONT key and the number shown in the instructions at
the same time. THE TURF SPEED SWITCH MUST BE OPEN.
